How did you try to open it, double click?
Instead, right click and Open with Notepad.
I don't have that file so I can't tell what it is supposed to have in it.
But the message says when Update tries to read the file it finds 2 lines and has a problem with what it finds at the start of line 2. So if you can edit the file in notepad and tell us what is there, then we can make a start.
The location of this file means that is it is something that will run automatically at startup. Presumably to trigger an update.